Bump up the version (#36)

Author: rubo

src/Nethermind.Int256/Nethermind.Int256.csproj

@@ -21,7 +21,7 @@
     <RepositoryType>git</RepositoryType>
     <RepositoryUrl>https://github.com/nethermindeth/int256</RepositoryUrl>
     <SymbolPackageFormat>snupkg</SymbolPackageFormat>
-    <VersionPrefix>1.1.0</VersionPrefix>
+    <VersionPrefix>1.1.1</VersionPrefix>
     <VersionSuffix></VersionSuffix>
   </PropertyGroup>